• Skill 2 Power Up is her highest damage output trait but only affecting her Skill 2, her main source of damage, in detriment of the rest. Her Burst Skill is rarely used.
• Skill Power Up is the most universal trait for most content, boosting the base potency of all skills equally. It’s completely fine to use this too, it just provides a smaller damage boost.
• Enhanced Damage Buff [A] is ideal to convert the effect of any critical damage memoria equipped into additional critical damage. Most importantly, it also multiplies her own self buff and the effect of Resilient New Students’ Staff which can grant her an absurd amount of free critical damage. Memoria and Staff combined make this trait infinitely stronger than regular Critical Damage Up traits.
• All-Target Attack Power Up is essentially the same as Skill Power Up in both effect and power, since all her skills are AoE.
• Critical Damage Up is a decent trait to have if you don’t have access to a high rank critical damage memoria. This only replaces Enhanced Damage Buff [A] traits. They should never be together.
• Air Damage Boost and Magic Damage Boost correspond to a different damage multiplier and are much weaker boosts than Skill Power type traits. They are a last option, normally for the early and mid stages of the game only.

• Resna is a character that’s impossibly easier to use with absurd levels of power hidden in her main kit and gearing options. Her passive skill matched with the effect from Resilient New Students’ Staff provides massive amounts of buffs, all of which can be increased by buff bonuses and traits.
• She depends strictly on the use of boost-type panels to work properly. This not only will give her the respective buffs, but also activate her weapon effects and passive, and provide her with guaranteed critical hits on her Skill 2.
• Matching her with boost panel generators like Saskia: Master of Alchemy or Sophie: Mighty Boss, and battle items like Student Support Red Jelly will practically guarantee her favorable conditions.
• If none of those options is available, she can create her own follow-up boost panels by using her Skill 1, especially when used during her first turn.
• Using the Student Support Red Jelly battle item while standing on a Boost-type panel, will let her activate the effect twice, effectively doubling all the bonuses.
• The guaranteed critical rate given to her Skill 2 by landing on these Boost-type panels only lasts during the same turn she landed on them. If using battle items (therefore moving the timeline 1 space) results in Resna moving out of this panel, she will lose the critical rate benefit, but the skill damage and critical damage bonuses gained will remain. This is another strong reason to always bring 1 copy of Student Support Red Jelly when playing her.
• She cannot be affected by negative effects from panels. That includes all red-icons, including damage down and weakness. This makes her really easy to use and just ignore those pesky rotation-ruining panels that sometimes show up.
• She is still affected by status effects inflicted by panels, and by negative effects inflicted by enemies.
• Her passive effect cannot stack, but it is not capped, meaning you can’t gain this effect more than once per turn (in case you activated 2 panels in 1 turn), but the skill damage bonus can be boosted by traits and gear effects to an indefinite amount.
• Her Leader Skill is extremely powerful and almost always be and should be used when playing her not only for the offensive power gained but also the defenses.
• If using battle items  to move from boost-type panel to another in the timeline, she can trigger the effect of Resilient New Students’ Staff twice in a single turn. With the right traits and buff potency boosts from her gear, she can turn this buff to over 200% total.
• Float Ring panels created by Valeria: Radiant Summer are categorized as Boost-type panels, so they can trigger all of Resna’s effects. Not only that, but this will also convert the original 40% skill damage gained per regular panels to 100% critical damage per panel instead.
• Her Burst Skill, while powerful, it’s rarely used because it does not have the guaranteed critical properties her Skill 2 does, and it requires a Burst panel to use, which halves all the potential bonuses she can normally gain from a regular boost panel.

New:

• Skill 2 Power Up trait is now possible to be matched with Enhanced Damage Buff [A], adding a 15% extra skill power total that she didn’t have before, and allowing Resna to use 3x EDBA traits instead of 2x like before. This combination is optimal in almost every single situation.